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目的探讨卵巢淋巴瘤的MRI表现。方法回顾性分析7例卵巢淋巴瘤患者的MRI表现及其病理资料。所有患者术前均行MRI平扫、增强扫描及DWI检查。结果 7例均为弥漫性大B细胞性非霍奇金淋巴瘤(NHL),其中原发性卵巢NHL 1例,继发性卵巢NHL 6例。双侧肿块5例,单侧肿块2例,共12个病灶,病灶约6.7~15.6 cm大小,呈圆形或类圆形6例,分叶状6例。与周围肌肉组织信号对比,病灶T1WI呈等低信号,T2WI呈稍高信号,DWI呈明显高信号。肿块信号大体均匀,无明显出血、坏死及钙化。4例病灶融合包绕血管,血管似漂浮于其中,呈现“血管漂浮征”。3例可见系膜、网膜、盆腔淋巴结肿大,5例合并腹腔积液,增强扫描病灶呈轻至中度均匀持续强化。原发性卵巢NHL与继发性卵巢NHL的MRI表现大致相仿。结论卵巢淋巴瘤的MRI表现具有一定特征性,术前MRI检查有助于诊断。
Objective To investigate the MRI findings of ovarian lymphoma. Methods The MRI findings and pathological data of 7 patients with ovarian lymphoma were retrospectively analyzed. All patients underwent MRI plain scan, enhanced scan and DWI. Results All 7 cases were diffuse large B cell non-Hodgkin’s lymphoma (NHL), including 1 case of primary ovarian NHL and 6 cases of secondary ovarian NHL. Bilateral mass in 5 cases, unilateral mass in 2 cases, a total of 12 lesions, lesion size of about 6.7 to 15.6 cm, round or round in 6 cases, lobulated in 6 cases. Compared with the surrounding muscle tissue signal, T1WI lesion showed a low signal, T2WI was slightly higher signal, DWI was significantly higher signal. Mass signal generally uniform, no significant bleeding, necrosis and calcification. 4 cases of fusion surrounded by blood vessels, blood vessels seem to float in them, showing “vascular floating levy ”. 3 cases showed mesangial, omentum, pelvic lymph node enlargement, 5 cases combined with ascites, enhanced scan lesions were mild to moderate and sustained sustained enhancement. Primary ovarian NHL and secondary ovarian NHL MRI performance roughly similar. Conclusion MRI findings of ovarian lymphomas have certain characteristics. Preoperative MRI can be helpful in diagnosis.